Motion-transmission gear.



G. HEELEY.

MOTION TRANSMISSION GEAR.

APPLICATION men NOV-17,1911

Patented July 27, 1915.

GEORGE HEELEY, 0F PARIS, FRANCE, ASSIGNOR TO COMPAGNIE POUR LA FABRICA- TION DES COMPTEUSS ET MATERIEL DUSINES A. GAZ, 0F PARIS, FRANCE.

MOTION-TRANSMISSION GEAR.

wisest.

Specification of Letters Patent.

Application filed November 17, 1911. Serial No. 660,872.

mission Gear, of which the following is a specification.

The connection of a transmitting or driving mechanism or of a motor to a receiving mechanism, situated respectively in mediums submitted to different pressures, requires a mutual airtight insulation between the two mechanisms, in order to prevent any communication between the two mediums which would allow the fluid in one of them, namely that of a higher pressure, to escape into the medium of lower pressure. This particular problem of connection presents in the case of gas meters either with fly wheels or bellows in which the measuring part is arranged in a compartment exposed to the pressure of the fluid, and transmits the movement imparted to it by this fluid, to a counting mechanism by means of the shaft traversing a stuffing gland, with or without a giater seal. For the gas meters with fly wheels which generally have only to carry prQssures not exceeding a few centimeters of water, the water seal may suflice to insure hermetic sealing of the connection, but if the pressure of the gas were to rise above the limit of the water seal, the gas would force back the liquid and pass through the pressure gland if as often happens, the latter is not absolutely airtight, hence there arise leakages varying in importance with the gas pressure. For the dry gas meters this inconvenience is still more to be feared, for the employment of a water seal is then impossible.

The present invention relates to a process and devices for constructing a tight joint, which will allow one and the same part to move in two distinct media, containing fluids at equal or different pressures, these media remaining hermetically shut off from each other without any'leakage of, the fluids or communication between the two. This result is obtained by means of a deformable airtight diaphragm, serving as a support to v an organ to which the transmitting mechanism or motor imparts a movement of circular oscillation operating the receiving mechanism.

A device by means of which this process can be carried out, is given by way of example 1n the accompanying drawing, in

Figure 1 represents a side elevation, in section, of a gas meter with fly wheel, according to this invention; Fig. 2 is a sect1on on a larger scale of the essential portions of the device; Fig. 3 gives a front view.

This device consists of a diaphragm (1,

.preferably of circular form, of deformable material (leather, rubber, etc.) pressed with its peripheral edge against the corresponding edge of an opening made in the partitron separating the two compartments to be insulated, and between the corresponding peripheral edges of two conical cups 0, d having their apices opposite each other. These cups are provided with central openings 6, f, against the edges of which rests a ball free to rotate in every direction. This latter is composed of two semispherical parts 9, h assembled together in any suitable manner and inclosing between them the central part of the diaphragm a. The semispherical parts have at either end in the direction of theirpolar diameters, rods 71, y' forming generatrices of tvyo opposite cones whose common apex coincldes with the center of the ball 9, it, while their axis coincides with the common axis of the two cups. One of these rods is driven by the transmltter or motor, either by means of a fork, or by means of a cam or by any other driving part which imparts to it an oscillating motion following a cone of revolution, without rotating about itself,

while the other rod transmits this motion to the receiving mechanism, by means of a crank-disk, fork or any other suitable device. It will be clear from these devices that the diaphragm a constitutes an absolutely tight joint, which, no matter what the pressure be to which it is exposed, the fluid (lighting gas or any other) traversing the compartment in which the driving, transmitting or meas- Patented July at, raise?" posed to the higher pressure, which should sufiice to insure a tight joint, provided that the grinding has been perfectly done. y

The space between the two cups can be filled with any lubricant, which, not being able to escapeouts'ide, remains in contact with the diaphragm and keeps it flexible.

It is to be'noted that the undulatory circular movement which thediaphragm a undergoes during its deformation, does not affect in any Way the volume of the compartment is the undulations successively taking place in the two compartments, being of 1. In a mechanism for transmitting power from one side of a gastight partition to another, the combination with such a partition of two truncated conical cups secured to opposite faces of the partition about an aperture therein said cups having openings at theirapicesand provided about the inner ends of said openings with spherical seats, a

v ball.

ball supported by said seats and provided with oppositely projecting crank arms which extend through the openings at the apices of the cups, and a diaphragm arranged between the cups and connected thereto and to the 2. In a mechanism for transmitting power from one side of a gastight partition to another, the combination with such a partition of a diaphragm extending across an aperture in the partition, two truncated conical cups positioned. against opposite faces of the partition and inclosing the diaphragm, means securing the cups to the partition and v retaining the diaphragm in place, said cups having openings at their apices and provided with suitable seats about the inner ends of said openings, and means supported by said seats Within the cups and movable by the diaphragm, including arms that extend outwardly through the openings in the apices of the cups.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE HEELEY.

Witnesses VIC-TOR DUTONT, GEORGES BORNSENIL. 

